cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A333302 Numbers produced by iteratively sorting the digits of the last number from largest to smallest in base 10 and then doubling, starting with the number 1.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 16
6 122
7 442
8 884
9 1768
10 17522
11 150442
12 1088420
13 17684200
14 175284200
15 1750844200
16 17508842000
17 177508420000
18 1755084200000
19 17510842000000
20 175084220000000
21 1750844200000000
22 17508842000000000
23 177508420000000000
24 1755084200000000000

List of values

[1, 2, 4, 8, 16, 122, 442, 884, 1768, 17522, 150442, 1088420, 17684200, 175284200, 1750844200, 17508842000, 177508420000, 1755084200000, 17510842000000, 175084220000000, 1750844200000000, 17508842000000000, 177508420000000000, 1755084200000000000]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.